Wavelength-switchable femtosecond pulse fiber laser mode-locked by silica-encased gold nanorods

被引：21

作者：

Wang, Xude ^{[1
,2
]}

Luo, Zhichao ^{[2
,3
]}

Liu, Meng ^{[2
]}

Tang, Rui ^{[2
]}

Luo, Aiping ^{[2
,3
,4
]}

Xu, Wencheng ^{[2
,3
]}

机构：

[1] Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China

[2] S China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangdong Prov Key Lab Nanophoton Funct Mat & Dev, Guangzhou 510006, Guangdong, Peoples R China

[3] S China Normal Univ, Guangdong Higher Educ Inst, Specially Funct Fiber Engn Technol Res Ctr, Guangzhou 510006, Guangdong, Peoples R China

[4] S China Univ Technol, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510640, Guangdong, Peoples R China

来源：

LASER PHYSICS LETTERS | 2016年 / 13卷 / 04期

基金：

中国国家自然科学基金;

关键词：

fiber lasers; passive mode-locking; gold nanorods; silica coating; ENHANCED THERMAL-STABILITY; SURFACE-PLASMON RESONANCE; SATURABLE ABSORBER; OPTICAL-PROPERTIES; MESOPOROUS SILICA; NANOPARTICLES; GRAPHENE; ABSORPTION; GENERATION; LOCKING;

D O I：

10.1088/1612-2011/13/4/045101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A wavelength-switchable femtosecond pulse fiber laser is demonstrated by using a saturable absorber (SA) of silica-encased gold nanorods (GNRs@SiO2). The GNRs@SiO2 SA presents a modulation depth of 4.5% and nonsaturable loss of 32.1%. By properly adjusting the cavity parameters, femtosecond mode-locked pulses centered at 1535.6 nm and 1560.5 nm could be achieved alternately. The durations of pulses at the two wavelengths are measured to be similar to 403 fs and similar to 426 fs, respectively. The achieved results indicated that the GNRs@SiO2 could indeed be a promising nonlinear material with excellent photothermal stability and saturable absorption, which could satisfy the requirements for different photonic devices and applications.

引用

页数：7

共 41 条

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